16th International Seminar on Condensed Matter Physics and Statistical Physics SIMAFE

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We are pleased to announce that we will have a new edition of our scientific meeting SIMAFE, the 16th International Seminar on Condensed Matter Physics and Statistical Physics, this year from the 24th to 26th November. This version will be hybrid, that is, with in-person as well as virtual talks. Additional remarks:

  • The face-to-face talks will be held at the main campus of the Universidad de La Frontera, in the city of Temuco, Chile.

  • The virtual talks will be held via the Zoom platform.

  • Posters will be virtual and will be hosted on the website of the event.

  • Participants without abstracts (spectators) are welcome to join us virtually.

  • The deadline for abstract submission is the 10th of October.

  • Confirmation of accepted submissions for presentations will be announced on the 22nd of October.

  • Abstracts will be received through the event website.

We look forward to sharing and discussing different ideas with you at SIMAFE 2021.

Best regards,

Organizing committee

Important: The face-to-face assistance and the eventual use of facilities at Universidad de La Frontera are subjected to the local COVID-19 protocols established in the "Step by Step Plan" (Plan Paso a Paso) communicated by the Chilean Health Ministry. More information at https://www.gob.cl/pasoapaso/ and https://coronavirus.ufro.cl/protocolos-ufro/

 



  Date and Time

  Location

  Hosts

  Registration



  • Start time: 24 Nov 2021 08:20 AM
  • End time: 26 Nov 2021 05:00 PM
  • All times are Chile/Continental
  • Add_To_Calendar_icon Add Event to Calendar

https://sites.google.com/view/simafe2021/registration?authuser=0


  • Co-sponsored by Universidad La Frontera, Universidad Técnica Federico Santa María, Universidad de San Luis, Universidad Tecnológica Metropolitana, Universidad Central de Chile, CONICET, ANID.
  • Survey: Fill out the survey
  • Starts 11 October 2021 08:00 AM
  • Ends 12 November 2021 11:55 PM
  • All times are Chile/Continental
  • No Admission Charge


  Speakers

Tim Mewes of University of Alabama

Topic:

Magnetization Dynamics and Damping

Tim Mewes Professor at University of Alabama, USA.

http://magneticslab.ua.edu/


Magnetization Dynamics and Damping

The dynamics and the damping of magnetization are of paramount importance to understand and predict the properties of magnetic materials used in a variety of applications. For example, spin-transfer torque magnetic random-access memory cells (STT-MRAM) are expected to switch fast, reliably, and with low power consumption, which requires low damping materials. New spintronic devices based on magnetic skyrmions, which also demand precise control of the magnetization dynamics, are another example. The Landau-Lifshitz-Gilbert equation of motion [1, 2] and extensions thereof [3] have been extremely successful in enabling predictions of the magnetization dynamics of materials both analytically and using micromagnetic simulations. Experimentally the magnetization dynamics can be elegantly probed in the frequency domain using ferromagnetic resonance (FMR). Recent progress in broadband ferromagnetic resonance techniques have provided valuable new insights in the magnetization dynamics and the damping mechanisms of magnetic materials. 

In this lecture, I will introduce the fundamentals of magnetization dynamics and damping. I will discuss their importance for many applications, including hard drive read heads, spin-transfer torque magnetic random-access memories and new skyrmions based devices. I will talk about various mechanisms that can contribute to the damping of the magnetization in thin films including spin-orbit relaxation, spin pumping, and two-magnon scattering. The presentation will show how recent developments in broadband ferromagnetic resonance enable precise measurements of the dynamics and damping in thin magnetic films and multilayers especially when combined with angle and temperature dependent measurements [4]. This will include a discussion of the recently discovered anisotropic damping in exchange biased films [5, 6].

[1]        T. L. Gilbert, "A Lagrangian formulation of the gyromagnetic equation of the magnetization fields (abstract only)," Phys. Rev., vol. 100, p. 1243, 1955.
[2]        T. L. Gilbert, "A phenomenological theory of damping in ferromagnetic materials," Magnetics, IEEE Transactions on, vol. 40, no. 6, pp. 3443-3449, 2004.
[3]        V. G. Bar’yakhtar and A. G. Danilevich, "Dissipation function of magnetic media," Low Temperature Physics, vol. 36, no. 4, pp. 303-309, 2010.
[4]        B. Khodadadi, A. Rai, A. Sapkota et al., "Conductivity-Like Gilbert Damping due to Intraband Scattering in Epitaxial Iron," arXiv preprint arXiv:1906.10326, 2019.
[5]        T. Mewes, R. L. Stamps, H. Lee et al., "Unidirectional Magnetization Relaxation in Exchange-Biased Films," Magnetics Letters, IEEE, vol. 1, pp. 3500204-3500204, 2010.
[6]        J. Beik Mohammadi, J. M. Jones, S. Paul et al., "Broadband ferromagnetic resonance characterization of anisotropies and relaxation in exchange-biased IrMn/CoFe bilayers," Physical Review B, vol. 95, no. 6, p. 064414, 02/15/ 2017.

Biography:

Tim Mewes received his undergraduate degree in physics in 1999 from the University of Kaiserslautern in Germany. He received his Ph.D. in physics from the same University in 2002. He subsequently was a postdoctoral researcher at Ohio State University. He joined the University of Alabama in 2005, where he now works as a professor in the Department of Physics and Astronomy.

Prof. Tim Mewes has published over 70 articles in peer reviewed journals on topics including epitaxial growth of magnetic thin films, exchange bias, influence of ion irradiation on magnetic properties, magnetic resonance force microscopy, broadband ferromagnetic resonance, magnetization dynamics, damping, and micromagnetics.

During his undergraduate and graduate studies Tim Mewes was a scholar of the German Academic Scholarship Foundation. In 2010 Prof. Mewes received a National Science Foundation CAREER award for the investigation of the magnetization dynamics and damping in magnetic nanostructures. In 2011 he became a Visiting Fellow of the Center for Nanoscale Science and Technology at the National Institute for Standards and Technology in Gaithersburg, and in 2014 he received the IBM Faculty Award. Dr. Mewes currently chairs the Alabama chapter of the IEEE Magnetics Society. He chaired the 2016 IEEE International Conference of Microwave Magnetics in Tuscaloosa and has been active on program committees of several other international magnetism conferences. He is also a member of the American Physical Society.

http://magneticslab.ua.edu/

Email:

Address:Tuscaloosa, AL 35487, United States, , Tuscaloosa, Alabama, United States





Agenda

IMPORTANT DATES

  • Abstract submission deadline: October 8th, 2021 (included) (*)

  • Notification of Acceptance/Rejection: October 22nd

  • Registration to attend as a spectator (this option is only in virtual mode): November 12th (*)

  • Reception of digitized posters: November 12th, 2021 (*).

  • Conference dates: November 24th-26th, 2021.

(*) By midnight - 23:59 Chile Time Zone (GTM-3)



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